A man has a goose a fox and a bag of corn with him walking through the woods. He comes to a river but there is only one boat available for crossing The boat will only hold the man and one other thing?

The man will first cross the goose and leave the fox and the corn behind. He returns and picks up the corn, crosses and leaves the corn, and brings back the goose. He drops off the goose and picks up the fox to cross, then he comes back for the goose.